USB- Scanner

Hi,
I try to run a Epson scanner (Perfection 1260) with SANE on my NetBSD 4
workstation. sane-find-scanner shows me the scanner:
# sane-find-scanner -q
found USB scanner (vendor=0x04b8 [EPSON], product=0x011d [EPSON Scanner]) at
libusb:/dev/usb0:/dev/ugen0
#
But when I try to list the scanner with scanimage -L it do not work (but works
on an OpenBSD 4.3 computer). The debug messages says:
# export SANE_DEBUG_PLUSTEK=7 ; scanimage -L
[sanei_debug] Setting debug level of plustek to 7.
[plustek] Plustek backend V0.52-7, part of sane-backends 1.0.19
[plustek] Retrieving all supported and conntected devices
[plustek] Available and supported devices:
[plustek] Device: >libusb:/dev/usb0:/dev/ugen0< - 0x04b8x0x011d
[plustek] usbDev_open(auto,0x04B8-0x011D) - 0x8055040
[plustek] Vendor ID=0x04B8, Product ID=0x011D
[plustek] usbio_DetectLM983x
[plustek] * could not read version register!
[plustek] open failed: -1
No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).
#
I read about that problem (see link) but I don't know how (if there is an
oportunity) to fix it.
http://mail-index.netbsd.org/pkgsrc-users/2006/11/18/0000.html
I have installed sane-backends "[plustek] Plustek backend V0.52-7, part of
sane-backends 1.0.19".
Any ideas?
Greetings
Helge
--
Helge Mühlmeier <H_Muehlmeier%gmx.de@localhost>